Your weight

If you'd like a more accurate measurement, use these numbers multiplied by your weight (using Earth gravity, of course):
Mercury: 0.4x
Venus: 0.9x
Earth: 1.0x
Mars: 0.4x
Jupiter: 2.5x
Saturn: 1.1x
Uranus: 0.9x
Neptune: 1.1x
Pluto: 0.07x